Bevel-edge-cardboard cutter



(N0. Model.)

D. T. MoOALL. BEVBL EDGE CARDBOARD CUTTER.

No. 570,180, Patented 0013.27, 1896.

WITNESSES: I 4 //v VE/V 727 UNITED STATES PATENT OFFICE.

DONALD T. MCOALL, OF JACKSON, MICHIGAN.

BEVEL-EDGE-CARDBOARD CUTTER.

SPECIFICATION forming part of Letters Patent N 0. 570,180, dated October 27, 1896.

Application filed March 2 9, 1 8 94.

To all whom it may concern.-

Be it known that LDONALD T. MoOALL, of Jackson, in the county of Jackson and State of Michigan, have invented a new and useful Improvement in Bevel-Edge-Oardboard Outters, of which the following is a specification.

My invention relates to apparatus for cutting the bevel edges of cardboard for picture mats, cards, dzc. and it consists in the improvements hereinafter described, and pointed out in the claims.

Referring to the accompanying drawings, Figure 1 is a perspective view of the entire apparatus, and Fig. 2 is a section on the line 00 00 50, Fig. 1.

The same letters indicate the same parts in bot-h figures.

Ais a castbed-plate extending transversely across the cutting-board B B.

D D are lugs secured to the Olllllllllg-bOfilCI B B and extending upward therefrom at the edges of said board and back of the bedplate A.

E E are slots cut through the lugs D D in the form of the arc of a circle having its central axis at the fartheredge of the bedplate A.

F F are arms rigidly secured to the bedplate A and extending backward therefrom to the lugs D D, where they are pivoted to the lugs D D by bolts 1) b passing through the slots E E. The bolts 1) b are adapted to be clamped at one position in the slots E E, or to be loosened and moved to another position in said slots.

G indicates a lever pivoted at g to the side of the cutting-board and having one of its ends directlyunder one of the ends of the bedplate A. The lever G is adapted to oscillate in a vertical plane to raise or lower said bedplat-e.

I-I indicates a sliding block provided with a lug i, which fits into a slot I I, which is dovetailed into and extends transversely across the face of the bed-plate A, and also provided with a second lug, 'i, that extends back of the upper edge of said bed-plate.

J is aknife supported on a block K, which block K is adapted to slide up and down in a groove in the sliding block H.

O is a bell-crank lever pivoted at one end to the sliding block H and at its elbow pivoted seen No. 505,579. (No model.)

to the block H and operating, when oscillated in the proper direction, to throw the knife I down into cutting position.

Stops L L are arranged upon the face of the bed-plate A, said stops each consisting of a block provided with lugs h and h, which, respectively, engage the groove I and the rear edge of said plate in the same manner in which the block H is attached thereto. Setscrews k are provided for holding the stops L L in their adjusted positions in an obvious manner. The described stops operate to limit the lateral movement of the block H on the face-plate A. One or both of the stops may be provided with a spring-finger Z, that bears with a yielding pressure on the stock being out, but in practice such provision in ordinary cases will be found unnecessary, as

' the face-plate A will hold the stock to the bed sufficiently.

M is a set-screw passing through the threaded lug N upon the sliding block K and down through a spiral spring n, which spring throws the knife up and clear of the material as soon as the lever O is released. The lower end of the set-screw M is turned smooth, forming a pin which extends down into a hole in the top of the sliding block H, so that by adjusting said set-screw the depth of cut of the knife may be regulated.

The method of operating the above-described apparatus is as follows: The baseplate A is first raised by means of the lever G, and the cardboard to be cut is inserted under it, and the bed-plate again lowered, its weight resting upon the cardboard and holding it in position. The stops L L are then adjusted to the position to limit the motion of the block II to the distance adapted to the required cut and secured in place. The block H is then grasped with one hand, the fingers passing around the handle of the lever O and thus driving the knife-blade down into the material. The block H is then passed along on the base-board A, making the required cut.

The bolts 1) b are moved along the slots E E until the front side of the base-board assumes the position in the plane of the required bevel of the cut and are then clamped.

I-Iaving fully described my invention, what I claim, and desire to secure by Letters Pat out, is

1. In a cardboard-cutting machine, the plate Aprovidcd with rearWardly-projecting combinaion With a bed 13, and the arc-shaped arms F, F, adj ustably pivoted in said slotted slotted lugs D, D, fixed thereto, of the faceplate A provided with rearWardly-projecting arms F, F, adjustably pivoted in said slotted guides, a reciprocating knife J fitted to travel in ways on said faceplate, and pivoted levers for raising and lowering said face-plate, substantially as described.

2. In a cardboard cutting machine, the combination with a bed 13 and the arc-shaped slotted lugs D, D, fixed thereto, of the faceguidcs, a reciprocating knife on said faceplate, stops longitudinally adjustable on said face-plate for limiting the travel of said knife, and pivoted levers, for raising and lowering the face-plate, substantially as described.

DONALD T. McOALL. Witnesses W. W. BENNETT, JOSIAH B. FROST. 

